Fan assembly



B. B CARY FAN ASSEMBLY Dec. 6, 1938.

Filed Nov. 13, 1957 fleeaie/ 5 60/ Patented Dec. 6, 1938 v F UNITED STATES PATENT OFFICE FAN ASSEMBLY Beecher B. Cary, Jackson, Mich., assignor to Hayes Industries, Inc, Jackson, Mich., a corporation of Michigan Application November 13, 1937, Serial No. 174,387

6 Claims. (01. 170-173) This invention relates to cooling fans for auto spacing plate 9. The rivets 8 serve not only to motive engines and particularly, to a fan assemsecure the spacing plate 9 but also to connect bly designed to project the fan forwardly into a the two sets of blades 1. Disposed through the desired spaced relation with the radiator core. hub of the fan 6 are openings It) in alignment In the design of automotive engines it is rewith openings H in the spacing plate 9. Through quired for maximum cooling efliciency that the the aligned openings I and II project screws I2, fan be disposed within a predetermined minimum as shown particularly in Fig. 1, for securing the distance from the radiator core. Certain considfan assembly to the fan mounting 5. erations sometimes result in the fan of a parts The spacing plate 9 is annular in configura- 10 manufacturer, when secured to the engine fan tion, having a central opening l5. As disclosed 10 mounting of an automobile, being spaced further particularly in Figs. 3 and 4, the openings II and away from the radiator core than is desired for IE in the spacing plate 9 have drawn at the best operating practice. In the past, the fan has edges thereof annular axially extending, cylinbeen projected toward the radiator core in such drica] pacing portions I6 and [1, The spacing is a Case by forming the fan blades in Such a plate 9 is also provided with an annular border me! th t hey ar axially Offset from the hllbl8, which is axially ofiset from the outer face l9 Such a construction, however, is not desirable for of t spacing m t 9 t th 1a of th the reason that it not only increases the cost of inner ends f the annular Spacing portions 5 manufacture of fans, but also results in an unand n so t t inner face of th spacing plate desirable stressing of the fan blades due to the 9 may lie flat against the hub f the f n 5 as 20 moment created by the centrifugal force when Shown particularly in Fig 3 The spacing plate the fan is rotated thereby necessitating a strong- 9 is t provided t a fan mounting engage. and heavier ment surface l9, which is spaced away from the An Object of the present invention is to h hub of the fan a a distance equal to the axial mate the necessity of Offset fan blades by length of the annular spacing portions l6 and I1. 25 mg a spacing plate secured 9 t fan during From the foregoing description, it will be apmanufacture and Serving to posltlon a fan havmg parent that by the present invention it is possible linearly Opposed blades forwardly of the fan to space the fan 6 forwardly from the fan mountmolmtinging 5 a distance determined by the axial length Another oblect of the mventlon 15 to 'f' of the spacing portions l6 and ll of the spacing 30 a spacing plate having a plurality of devlees plate 9, and thus to have linearly aligned blades thereon o spacing the same from the e 1 in which, during rotation, no moment as the These and other Objects Will be apparent from result of centrifugal force is set up. The entire the fo low n Spe fi When taken With the assembly is fabricated from sheet metal stock accompanying draw n n Which and is considerably lighter in weight than would 35 1 iS a partial View under the hood of an be a similar one having the blades formed to be automobile engine showing the radiator and the axially offset from the hub.

fan assembly according to the present invention, Having thus described my invention, what I Fig. 2 is an elevation of the rear side of the desire to secure by Letters Patent and claim is:

40 fan assembly disclosing the spacing plate, 1. A fan of the character described, compris- 40 Fig. 3 is a section on the line IIIIII of Fig. 2, ing a plurality of blades having a hub, and a and a plate secured to the rear side of said hub, said Fig. 4 is a side elevation of the inside of the hub and plate having disposed therebetween a spacing plate. plurality of separating-devices, said hub and plate Referring particularly to the drawing, the refhaving a central rotative axis and said separat- 45 erence character 1 indicates an automobile ening devices being spaced from and spaced about gine. Disposed forwardly of the engine is a said axis. radiator core 2 in front of which is a radiator 2. A fan of the character described, p grill 3. Mounted on the front of the engine I ing a p u ty of blades having a d blades is a water pump 4 having disposed on t m; and hub being in substantially the same plane, 50 thereof in driving relation thereto a fan mountand a plate secured to the rear side of said ing 5, to which is bolted the fan 6, said hub and plate having disposed therebetween The fan 6 is formed of sheet metal of two sets a plurality of Spaced Separating de esof oppositely extending aligned blades 1. To the 3. A fan of the character described, comprisrear side of the fan 6 is secured by rivets 8 a ing a plurality of blades having a hub, said blades 55 and hub being in substantially the same plane, a plate secured to the rear side of said hub, and a plurality of axially extending cylinders disposed between said plate and hub for separating said plate and hub, said hub and plate having a central rotative axis and said axially extending cylinders being spaced from and spaced about said axis.

4. A fan of the character described, comprising a plurality of blades having a hub, said hub having a plurality of openings therethrough for receiving securing screws, a spacing plate secured to said hub, a plurality of openings in said plate corresponding to and in alignment with the openings in said hub, and a plurality of cylinders integral with said plate and normal thereto disposed about the openings in said plate and between said plate and hub for spacing said plate from said hub.

5. A fan of the character described comprising a plurality of blades having a hub, said blades and hub being in substantially the same plane,

said hub having a plurality of openings therethrough for receiving securing screws, and a plate secured to said hub, said plate having a plurality of openings corresponding to and in alignment with the openings in said hub and an additional opening in the center thereof, each of the openings in said plate having thereabout normally extending cylinders integral with said plate for spacing said plate from said hub, said plate also having an annular portion at the outer edge thereof normally displaced therefrom toward and into engagement with said hub.

6. A spacing plate of the character described having a plurality of openings therethrough, said openings being bordered on one side by cylinders extending normal to said plate, said cylinders having the free ends thereof in a plane, the outer edge of said plate having an annular portion thereof deflected out of the plane of said plate into the plane of the free ends of said cylinders.

BEECHER B. CARY. 

